I-Best 6 Layer FR4 ENIG Impedance Control Umkhiqizi we-PCB kanye Nemboni |Huihe Circuits

I-6 Layer FR4 ENIG Impedance Control PCB

6 Ungqimba FR4 ENIG Impedance Control PCB Isithombe Esifakiwe

Incazelo emfushane:

Izendlalelo: 6

Ukuphela kwendawo: ENIG

Izinto eziyisisekelo: FR4

Isendlalelo Sangaphandle W/S: 7/4mil

Isendlalelo sangaphakathi W/S: 7/4mil

Ubukhulu: 2.0mm

Okuncane.imbobo ububanzi: 0.25mm

Inqubo ekhethekile: Impedans Control

Thumela i-imeyili kithi

Imininingwane Yomkhiqizo

I-PCB Impedance Line Design

1.Enqubweni ye-PCB LAYOUT, cabangela izimo eziyisisekelo ezidingekayo ukuze ulawule i-impedance yilezi: ububanzi bomugqa, ibanga lomugqa, ubude bomugqa, ungqimba lwereferensi lokuvikela umugqa we-impedance, ngokusho kwalezi zidingo zizobekwa endaweni efanele yomugqa we-impedance. .

2. Isendlalelo sereferensi esivikelayo sikhetha ngokukhethekile umugqa oseduze nongqimba lapho umugqa we-impedance utholakala khona.Isikhundla esihambisanayo somugqa we-impedance ishidi lethusi eliphelele, ukuze kuqinisekiswe ukuthi ukuphambuka kwevelu ye-impedance kuyalawuleka.Ekukhiqizeni kwangempela, ngokusho komklamo we-LAYOUT, ishidi lethusi eliseduze emgqeni we-impedance likhethwa njengesendlalelo sereferensi.Uma lingekho ishidi lethusi endaweni ehambisanayo, i-impedance ayikwazi ukulawulwa.Uma ishidi lethusi lingakwazi ukuvikela ngokuphelele umugqa we-impedance, ukuchezuka kwe-impedance akulawuleki.

3, Ukusatshalaliswa komugqa we-impedance ukunakwa okukhethekile: i-impedance yesici ingumugqa owodwa kuphela, udinga kuphela ukucabangela ububanzi bomugqa kanye nobude bomugqa.Ama-impedances ahlukene kufanele aqukathe imigqa emibili yobubanzi bomugqa ofanayo oqondane ngokuphelele.I-Impedans ye-Coplanar iwukuxhumana phakathi komugqa nethusi lomhlabathi, ngakho-ke ububanzi bomugqa budinga ukufana, izinhlangothi zombili zomugqa zizungezwe ithusi lomhlabathi, futhi ibanga elisuka emgqeni kuya emhlabathini lifana ncamashi nethusi. ukuqala kuze kube sekugcineni.

Iyini Impedance Control Ku-PCB Isetshenziselwa?

I-impedance elawulwayo iyakhethwa lapho isignali kufanele ibe ne-impedance ethile ukuze isebenze kahle.Kuzicelo zemvamisa ephezulu, i-impedance eqhubekayo kufanele igcinwe kulo lonke ibhodi ukuze kuqinisekiswe ubuqotho bedatha edlulisiwe kanye nokucaca kwesignali.Uma indlela ye-conductor iba yinde noma inyuka imvamisa, kudingeka ukulungiswa okwengeziwe.Ukuntuleka kokuqina kuleli zinga kungandisa isikhathi sokushintshwa kwensiza kagesi noma isekethe futhi kuholele emaphutheni angalindelekile.

I-impedance engalawulwa kunzima ukuyihlaziya ngemva kokuba izingxenye ziqoqwe kumjikelezo.Izingxenye zinezigaba ezihlukene zokubekezelelana kuye ngenkatho.Ngaphezu kwalokho, izici zabo zingathinteka ngokushintshashintsha kwezinga lokushisa, okungaholela ekungasebenzi kahle.Kulokhu, ukufaka esikhundleni sengxenye kubonakala kuyisixazululo, kodwa empeleni kungukungaphumeleli okwanele kwe-wiring yomqhubi okuyinkinga.

Ngakho-ke, umklamo we-PCB kufanele uhlole i-impedance ye-conductor wiring kanye nokubekezelelana kwayo kusengaphambili ukuze kuqinisekiswe ukuthi amanani wengxenye ahlangabezana nezidingo.